TWI601510B - Bendable surgical instrument for suturing meniscus - Google Patents

Description

Variable angle semi-monthly cartilage suture surgical instrument

The present invention relates to a surgical instrument, and more particularly to a suture surgical instrument for suturing a half-monthly cartilage.

The semilunar cartilage is composed of fibrocartilage, which is a cartilage located in the knee joint between the femur and the tibia. It is a shock absorber for the knee joint and absorbs the pressure on the knee joint. When the cartilage is broken in half a month, it may cause limited movement of the knee joint, which may not stretch straight, bend, or even swollen and sore knees and cannot continue to exercise. In general, if the half-month cartilage rupture is better at 2/3 of the blood flow near the outside of the joint, the physician usually recommends active repair. The repair of the semilunar cartilage is mainly performed by arthroscopic surgery, and it is a total intra-articular repair. The suture device is used to suture the rupture of the semi-monthly cartilage, and the knot is hit in the joint. Because the surgical wounds of arthroscopic surgery are small and invasive, the patient's hospitalization time is short, the pain is reduced, and the postoperative recovery is fast.

The current suturing instrument structure generally comprises a control grip, a tube protruding outwardly from the control grip, a tube inserted in the outer tube and partially protruding forwardly protruding from the end of the outer tube to pierce the semi-monthly cartilage. The inner tube is pierced, and a suture tool for suturing the slit is installed in the control handle for operation to release the suture tool from the end of the puncture inner tube for performing the suturing operation. When arthroscopic surgery is used to repair the sutured ruptured half-moon cartilage, it is limited by the distribution of ligament tissue around the knee joint and the blockage of the bone structure. Therefore, the angle of movement of the suture device that penetrates into the joint cavity through a surgical wound is quite limited, plus The end portion of the piercing inner tube projecting outside the outer tube and for piercing the semilunar cartilage to set the suture tool is in the shape of a straight rod or a fixed curvature, so that it can only be used for suturing a crack at a specific angular position. Physicians often have to add additional surgical wounds to the knee to treat other areas of the fracture that cannot be treated by the previous surgical wound. In addition to the increased cost of surgery, it also causes more surgical wounds on the patient.

Accordingly, it is an object of the present invention to provide a semi-monthly cartilage suture surgical instrument that can ameliorate at least one of the disadvantages of the prior art.

Thus, the variable angle half-moon cartilage suture surgical instrument of the present invention can be used to set and release a suture tool for suturing a half-moon hose wound. The semi-monthly cartilage suture surgical instrument includes an outer tube extending along a telescoping axis and having an open end, and a puncture inner tube that is displaceably projecting into the outer tube. The puncture inner tube is for receiving and releasing the suture tool, has a shaped section extending along the telescopic axis, and a bendable region extending coaxially outward from the end of the shaped section and elastically deformable a bendable section having an inner curved half side and an outer curved half side opposite to each other, and the inner curved half side is radially provided with a plurality of slits arranged along the longitudinal interval thereof, the bendable portion The segment can be in a retracted state in which the outer tube is elastically deformed and straightened in a contraction with the outer tube, and a state in which the outer end protrudes from the open end and elastically deforms toward the inner curved half. .

The utility model has the advantages that: by adjusting the design of the bendable section protruding from the length of the outer tube to change the bending angle, the semi-monthly cartilage suture surgical instrument of the invention has a plurality of bending angles for selection, which is convenient. It is quite convenient to adjust the angle of the bendable section according to the surrounding tissue and the shape of the bone, as well as the position and angle of the part to be sutured.

Referring to Figures 1, 2, and 4, an embodiment of the variable angle semilunar cartilage suturing surgical instrument of the present invention is suitable for receiving and releasing a suture tool 900 for suturing a fissure of a half moon cartilage, the semilunar cartilage suture surgical instrument comprising a control handle 3, a tube 4 fixed to the front end of the control handle 3 and extending forward along a telescopic axis 40, and a puncture inserted into the outer tube 4 and coupled to the control handle 3 Tube 5. The suture tool 900 includes a suture 901, and a plurality of spacer sleeves 902 disposed on the suture 901 for snapping to the semilunar cartilage. Due to the plurality of suture tools 900, Moreover, the manner of use and the structural design are not the improvement points of the present invention, and therefore will not be described in detail.

The control handle 3 is internally provided with a mechanical structure operable to partially project the puncture inner tube 5 out of the outer tube 4, and is provided with a suture tool 900 operable to accommodate it. The mechanical structure that punctures the inner tube 5 and releases it. Since the control grip 3 is a conventional member and has many types, it is not an improvement point of the present invention, and therefore will not be described in detail.

Referring to Figures 1, 2, 3, the outer tube 4 has an open end 41. The puncture inner tube 5 is made of a metal material such as a titanium-based alloy, a nickel-titanium alloy, a nickel-titanium-copper alloy, or the like, and is not limited to the above types. The piercing inner tube 5 has a shaped section 51 for attaching to the control handle 3 and extending along the telescopic axis 40 and being unable to be bent and deformed, and an extending end extending coaxially from the extending end of the shaped section 51 and being elastically bendable The deformable bendable section 52, and a puncture tip section 53 projecting coaxially outward from the end of the bendable section 52. The puncture inner tube 5 can be manipulated by the control handle 3 to be in a retracted state in which the outer tube 4 is retracted in the outer tube 4 to be elastically deformed and straightened, and one is forwarded by the bendable portion 52. The open end 41 of the outer tube 4 is protruded to change between the outer bending states of the elastic bending deformation.

For convenience of explanation, the structure of the puncture inner tube 5 will be described below in the case where the puncture inner tube 5 is in the retracted state.

The bendable section 52 of the puncture inner tube 5 has an outer curved half 525 and an inner curved half 521 radially opposite each other, and the bendable section 52 is designed to be constant to the inner curved half 521 direction arc bend. The inner curved half 521 has a plurality of slits 522 extending radially and spaced along its longitudinal spacing, and has a plurality of axial side cuts 523 that are aligned along their length and that define a slit 522 in pairs. And the two-axis side cut surface 523 of each of the slits 522 is gradually axially away from the outer curved half 520 toward the inner curved half 521, and the angle between the two-axis side cuts 523 is between 1 and 30 degrees. . In addition, the slits 522 cooperate to divide the inner curved half 521 into a plurality of axially arranged semi-annular stop portions 524, the axial width of each of the stop portions 524 being from the outer curved half 525. It is gradually narrowed toward the inner curved half 521 direction and is substantially trapezoidal.

The end of the puncture tip 53 has an annular puncture end surface 530 extending outwardly from the bendable portion 52 and extending obliquely from the inner curved half 521 toward the outer curved half 525. The puncture tip 53 can be used. The perforated half-month cartilage site is pierced, and the piercing end face 530 defines a release port 531 for releasing the suture tool 900.

Referring to Figures 1, 4 and 5, in the use of the semilunar cartilage suture surgical instrument of the present invention, the puncture inner tube 5 retracted in the outer tube 4 is elastically deformed and straightened, and a reservoir is bent toward the inner curved half 521. Complex complex elastic.

When the crack of the semilunar cartilage is to be sutured, the puncture tip 53 and the bendable section 52 of the puncture inner tube 5 can be pushed out of the outer tube 4 by operating the control grip 3. When the curved portion 52 partially protrudes from the outer tube 4 to form an exposed portion 526, the complex elastic force of the exposed portion 526 immediately drives the arc to form a curved state, and the same position at the exposed portion 526 The block portions 524 are opposed to each other, and the adjacent isometric side cut surfaces 523 are opposed to each other so that the exposed portions 526 are bent and shaped. At this time, the slits 522 at the exposed portion 526 are closed, and the exposed portion 526 is formed into a complete tubular body having no slit on the outer peripheral side.

Then, the puncture tip 53 can be punctured through the half-month cartilage site to be sutured, and the slit is released from the puncture tip 53 passing through the other side of the half-moon cartilage by operating the control grip 3. A snap positioning member 902 of the wire tool 900 pulls the puncture inner tube 5 back and pull away from the half moon cartilage, so that the snap positioning member 902 is snapped to the other side of the half moon cartilage. Since the suture tool 900 is used to suture the semi-monthly cartilage cracks in many ways, it will not be described in detail.

During the process of puncturing the half-month cartilage for suture repair, since the exposed portion 526 of the bendable section 52 is curved into a smooth and non-incision on the outer peripheral side, the perforated half-month cartilage can be smoothly passed through. And will not scratch the half-month cartilage, so it will not cause secondary damage to the half-month cartilage.

In addition, during the operation, the physician can adjust the exposed portion 526 according to the position and angle of the suture portion, by adjusting the length of the exposed portion 526 of the outer tube 4 by telescopic adjustment. The bending angle, the longer the exposed portion 526, the greater the bending angle.

In summary, the bendable section 52 can be automatically elastically bent to a specific angle after projecting the outer tube 4, and can be designed to change the bending angle by adjusting the outward protrusion elongation, so that the present invention is half a month. When the cartilage suture surgical instrument enters the joint cavity through a surgical wound at the joint of the patient for suturing operation, it has multiple bending angles to be used, which can conveniently match the surrounding tissue and bone shape, and the position and angle of the suture site. Adjusting the angle of the bendable section 52 required is quite convenient, and it is possible to avoid opening a plurality of wounds for suturing the surgical instrument on the patient's body surface. The angle of the angle between the adjacent two-axis side cutting surfaces 523 of the bendable section 52 can be further matched, so that the exposed portion 526 can change with different bending angles, and after bending, it becomes a smooth tube body with no slit on the outer circumference side. It can pass through the half moon cartilage more smoothly. Therefore, the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

3‧‧‧Control grip

4‧‧‧External management

40‧‧‧ Telescopic axis

41‧‧‧Open end

5‧‧‧Puncture inner tube

51‧‧‧ Shaped section

52‧‧‧ bendable section

521‧‧‧Inside curved half

522‧‧‧ incision

523‧‧‧Axis side section

524‧‧ ‧Block section

525‧‧‧ outside bend half

526‧‧‧Exposed parts

53‧‧‧Puncture tip

530‧‧‧Puncture end face

531‧‧‧ release

900‧‧‧Sewing tools

901‧‧‧ stitching

902‧‧‧Snap positioning parts

Other features and advantages of the present invention will be apparent from the embodiments of the appended drawings, wherein: Figure 1 is a fragmentary partial cross-sectional view of one embodiment of a variable angle semilunar cartilage suturing surgical instrument of the present invention. And a case where the puncture inner tube is in a retracted state; Fig. 2 is an incomplete partial side cross-sectional view of the embodiment; Fig. 3 is an incomplete perspective view of the puncture inner tube of the embodiment; An incomplete partial side cross-sectional view of the embodiment, and illustrating the case where the puncture inner tube is in an outwardly bent state and the suture tool is released; and FIG. 5 is a view similar to FIG. 4 and illustrating the puncture The case where the tube is in the outer curved state at different bending angles.

4‧‧‧External management

41‧‧‧Open end

5‧‧‧Puncture inner tube

51‧‧‧ Shaped section

52‧‧‧ bendable section

521‧‧‧Inside curved half

522‧‧‧ incision

523‧‧‧Axis side section

524‧‧ ‧Block section

525‧‧‧ outside bend half

526‧‧‧Exposed parts

53‧‧‧Puncture tip

530‧‧‧Puncture end face

900‧‧‧Sewing tools

901‧‧‧ stitching

902‧‧‧Snap positioning parts

Claims (7)

A variable angle semilunar cartilage suture surgical instrument for setting and releasing a suture tool for suturing a half moon hose wound comprising: an outer tube extending along a telescopic axis and having an open And a puncture inner tube insertably inserted into the outer tube and configured to receive and release the suture tool, the puncture inner tube having an extension along the telescopic axis a shaped section, and a bendable section extending coaxially outward from the end of the shaped section and elastically bendable, the bendable section having an inner curved half and an outer curved half opposite to each other, and The inner curved half is radially provided with a plurality of slits arranged along the longitudinal interval thereof, and the bendable portion is capable of being elastically deformed and straightened with respect to the outer tube in a state of being contracted into the outer tube. And a change from the open end and the elastic bending deformation toward the inner curved half. The variable-angle half-moon cartilage suture surgical instrument according to claim 1, wherein when the bendable section is in the outer curved state, the bendable section protrudes from an exposed portion outside the open end to be elastic The bend is deformed and the slits at the exposed portion are closed. The variable angle semilunar cartilage suture surgical instrument of claim 2, wherein the inwardly curved half has a plurality of axially aligned and two sets of axially defining one of the incisions to define an axial side section The two axial side cut surfaces of each slit are gradually axially away from the outer curved half side toward the inner curved half side, and the equiaxed side cut surfaces at the exposed portion are oppositely facing each other to make each other The incision is closed. The variable angle semilunar cartilage suture surgical instrument according to claim 3, wherein the bendable section is located in the retracted state, and the axial angle of the two adjacent axial side sections defining each slit is between 1 ~30 degrees. The variable angle half-moon cartilage suture surgical instrument according to claim 3, wherein the inner curved half has a plurality of semi-annular stopper portions arranged axially and respectively between the adjacent slits and having a trapezoidal shape . The variable angle semilunar cartilage suture surgical instrument according to any one of claims 1 to 5, wherein the puncture inner tube further has a puncture tip protruding coaxially outward from the end of the bendable section, the puncture tip The segment has an annular puncture end face that tapers from the inwardly curved half to the outer curved half to define a release port for releasing the suture tool. The variable angle half-moon cartilage suture surgical instrument of claim 1, wherein the puncture inner tube is made of a metal material.